Machine for building concrete structures.



. H.l G. SELLMAN. MACHIEOR BUILDING CONCRETE STRUCTURES.

' A'PPLIgATIoN FILED DB0. 1a, 1911. j 31,062,04.

@SHEETS-SHEET 1j as i. 1

1L G.s'ELLMA- N. l summum PQR BUILDING4 carms'r Smucmunns. Y'APPIILIOAT'IO IIED psu. La, '1911. 1,062,040, Patented may 2o, una.'

H. G. SBLLMAN.- l v MACHINEFOR BUILDING CONCRETE' STRUCTURES.

^ .APPLIOATION FILED nno.'1a, 1`911.

Patent-,q May 20,1913. f

mmv sm:

'is' enfrente roei IHENR'YG. 'sE'LLMA'it, @unitn Anson, ziiiliciiioein.

MACHINE ron Bonomo consume sriwcruniis.

' Specification of Letters Patent. Appu'catmiiiea neemiier' is, 191i;serieu im, @sensa rai-.einen zum i T0 uli whom 1' t may concern Be itknown that I, HENRY Semin/IAN,"

a citizen of the United States, residing at Ann Arbor; in the. -countyofi eshtenmv and vState of Michigan, have invented certain new anduseful Improvements in Machines for' Building 'Concrete'Structureg of'which the following is aspecitication.

This invention relates to a'device foruse in 1ouilding upright-concretestructures such as silos, chimneys, Water towers and similar hollowstructures, and its object is to provide a suitable device forsupporting a mold or form undl facilitating the` rinsing and4 loweringor kthe saine to successively forni superposed portions of theuvall, andtur- 4tli`ert-o lprovide a suitable construction or" inold or forni forusein conjunction there with. lj I To this end theinvention consists. inthe matters hereinafter,iiioi'etullj,1 eet forth and particularlypointed outin-tlie claims?,l

referenceslieing had to the accompanying drau'ings,-1n .Which-' v Figurel isa vert-icalsection throughthe,

structure. embodying the. Ainvention and lshowing thesanie in .Operativeposition;

Fig. 2 is a plan view of the'sanie with portions broken arvay to showthe construction; Fig. 3 is un enlarged detail showing the manner ofjoining the n iold sect-ions.; Eig. 4c is an venlarged sectional'detuilnshoiving a portion of the nioldsupporting frame; Fig.v .t3-is anenlarged perspective detail of a portion ot' u central-tower or mastAand incclia;

uisiii for raising the supporting arins and adjacent parts; Fig'. 6 isaperspectivey detiiil of a portion of an outer mold; Fig. T is a similardetail yof.V an inner ivall o'l a inold:

Fig.' is a perspective,detail of a vfoot l anchor toi'n the lower end ofthe supporting traine column: and Fig.'9 is a diagrauu'natic' View of amodified forni of mold.

For convenience of illustration, the device embodying theiiivention isshown as including a -inold or forni especiall)Y designed tor torniing-vconcrete walls of hol/low structures-,

such as a silo vvalll.,l Thedevice may however Ahe used for *forming theAwal-ls ot any: hollow structure .whether ot circular, torni-- as shownin Fig. l or of rectangular or other y l shapecrossfsection 'and it isfurther adapted 'byproviding iiioldsv of proper-shape and .constructioniI to 'form upwardly tapering. structures such' as chiiniievs and thelike. p y

As shown in the drawings the molti proper consists of an inner .niill 2ein outer wall 23 spaced spurt the distance oit desi-red,thickness otthe Well and thisl incid 'is adapted to be liftedverticelly to toi-insucceeding sections orportions ofthe struc ture, the ,mold being left ineach position long enoughI te permit the portion just Y foi-ined totlioroughlyset. or harden before the -nioid is again raised to form theneto?J vrespectivelyv of 't'he'nietal plates..v 'Each'end of eachQsection is provided Wit-han angle bur '6,'Fi'g. 13, .which angle barswhen the linolds placed tor use, aout the'fang'le bars (on theadjacent'ends of the sections'and the sectio'nsare 'irinly secured .together bybolts T. passed through' openings'in the angle bars G.' lntei-.inediatethe ends et' each sectionoit the outer wall' is e T-bar 8 secured tot-heouterl face ci? the wall und extending verti- 'cally across tue saine.with a series `of holes 9' to receive va bolt l() r`tor adjustablyY'and-cletachably securing thereto u hanger ll for supporting the moldWallin position',v asivill be hereinafter more fully ifl'escribed. Y

The walli ot' the mold 'is also formed ot' ,aplui'ality votnseclioiisand cach section is provided ai oneeud with u bar of wood or othersuitable material ,l2 secured' along its edge .and formed ivith abeveled edge l?.

yThe end of the abutting sec-tion ot the wall is also provided vv-i'tl-ia similar liar lY-lY having an edge beveled to 'correspond with andmatch. the lievel ,i3 on the other liar. '4 'l'hese iiieeling beveled.endslv of the sections thus` overlup'soihut when it is. desired io.move the. incid the inner wall .'2 of each section may be sprung'iiivfaid' to, diseiigage `the iiiold ivallfroiu Athe inner faeefot'lrheformed This bar is provided' section of the concrete wall. The ends "fthe sections of the inner wall of the mold are secured together byproviding angle bars .l on the bars 12 and 14 and connecting vthe' sameby -bolts 16- passing through openings lin theangle bars. y

To support the mold wallsin position for .with a hook 33 to engage' anopening in an forming the upper sections of the concrete wall, asupporting mast 17 is erected at the center o f the proposed structure.This mast may be of any suitable constructionand of a greater heightthan the desiredheight of the structure. .A s shown in the drawings ythis mast v'consists of four wooden bars or the poles 18 which arepreferably 'rectangular in cross section and a're set equal distancesapart and form the four corners of the mast or column 17.*' Thisl mastisfheld firmly in position while the work is goinl on, bya oot anchorshown in Fig. 8. T is anchor consists of fourmeinbers-or planks 20 setoii edge and-'each provided at one end with a strip 21 extendingparallel with the end of lank andforming a loop to receive one of teother lanks. These plank members are thus inter ockedto form betweenthem a rectangular box of horizontal dimensions equal to .the crosssectional dimensions of the rectangularl mast which is made up of thefour members, one member. of the :mast being set in each corner'ofthebox and the box then filled in with cement or concrete to `firmly holdthem in'place. |Wedges 22 are iriver; into the looponeach lank to bind tie' planks in position and tie outwardly 'f-'tentling ends of the planksabut the wall 1 "ig. 1) of the structure and center'the mast sprein.After the structure is com leted ind itA is desired to remove the-moland supporting mast, the wedges 22 are knocked out and theA yplanks mayremoved from the' foot of the mast to rrelease the same.

The inner mold wall 2'is supported in position for. use by rectangularshaped cross beams 23 set at right angles'to each other and of a size tolit between the four bars18 kforming the mast. Each bean'i is providedwith a reinforcing member 24- to strengthen the saine at its points ofintersection with the other beam and each beam is 'supported a slidingextension bar 25 supported u on the upper edge of the beam and guidethereon by a strap26 secured to the inner end of the extension andcarryng'a roller 27 engaging of the beamV A guide fork 28 on eachend ofeach beam carries a. roller 29'engagng the under side of the 'extensionbar 25 and said fork extends upward in engagement wit-ii the sides oftheextension bar to guide the same in its inward and outward movement onthe beam.v All upwardly extending lhook 30 (see-Figs. 1 and 4) on'theouter end of 'eacl 1 'exteizsion bar engages an opsm then be readily.

- usted' upwardly alon upon the outer ends of the lower side'l ing inaniangglel bar '31 secnrcd along the` lower edge ot each section of theinner wall 2 oit' the mold to support said sections upon the extensionbars and ldet-achably attach' the same tlieleto.. A bracket 32 secured upon each extension bar lextends "upward-ly tierefrom and `is provided atits upper end angle bar 3i securedalong the npper'cdge of eachsection-'of the inner .wall ot' the mold and detacliably hold the-upperedge o't the section. Each sec-tion ot the inner wall of theI moldis 'thus-carried upon'one ot' the ex tension bars so tliat-by'an inwardmovement of the extension upon the beam the'section of themold wall maybe moved inward away' -from the concrete wall and said section wi l atthe same time be supportedfin 'position to be raised into posit-ion forforming another portion ofl thel struct ure.

Securing bars or beams 35 arranged at right angles to each other and ofa rectangin lar cross section to tit between the members of the mast areroi'idedl and positioned at such'a distance a )ove the beams 23 that the'workmen niay'conienien'tly stand erect upon said beams beneath thebeams 35.4 The beams 35 are provided with .reinforcing bars 36 andextend radially outward some distance above and beyond the' up er edgeof the nio'ld. The outwardly extending ends 'of the beams-are notched toreceive loops 37 secured upon the upper end of the hang c'rs 11 andadjustably hold the hangers in posit-ion to properly si pport the outermold wall'. 4The beams 2 and 35'aradjustably held in position between tie four inembers of the mast by `clamping blocks 38V engaging the outersides oi! the members ofthe mast and drawn inward toward' each otherbyibolts39 extendin r through the blocks and between the mem, rs ofgtliemast, thus when the nuts on the bolts are turned up. forcin saidlmembers toward each other into firm rictional engagement with the sidesof the beams and into the angles formed by the'meeting'ofcrossed beams.-Each 4setof' supporting beams is thus frictionally/,Ii''ld in anyposition towhich` they may be adthe mast and by oosen-ing the nuts ontie bers of the mast may bets rung outwardly' bolts 39 the 'inei'nf and'the beams slid upwar ly between them l v to raise the mold.' To s'oraise the moldinto iton for forn'r'ringl anotherportion of the wall ofthestructure, the beams 23 and 35 are connected by a ratchet bar 40secured at "its 4ends to the'beams and extending vertically in thecenter of the mast-between the four members forming said mast. -Bearings41 are adjust-ably clamped to two of the 'four members of the mast byclipbolts 42 so that said bearn maybe readilyadjust'ed to anydesiredpositionupward or downward alongthe mstg. A"rcker bar'43 isprovided havriestwo pawls' 5 pivotally attached tothe Acarrying beamsand bar in position to engage the ratchet bar l0. IIhese pawls -L areeach weighted at' one engagement 'with' the ratchet bar. Outwardlyextending'handle portions LL6 ontlie rocker bar are provided for rockingsaid bar to alternately engage the pawls with the notches ot the ratchetbai' and raise the upward along the ng blocks are released four membersof side so that they will be normally held inmast, when the clampi torelease and spread the the mast-from tiictional engage-mentwith thebeams.- Y

It may be found desirable to forni a. tapering wall, as for instance, inthe construction ot' chimneys and it may also beV desirable tol -orm the'structure rectangular in plan view.- Such' a construction isillustrated in Fig. 9", the outer wall 4T of the 'in-old being formedtapering and made in sections there being integral corner sections 48and intermediate sections 49 Fitting between the corner sections andhaving beveled side edges overlapping similarly formed side edges on thecorner sections.A The intermediate sections 49 are'held in place bystrips 50 secured to the edges of the corner sections. When a moldhaving a tapering wall-oi this characportion justv fio teri's raised toforni the next portion of the structure it becomes necessary to contractsaid wall sutliciently to bring its lower edge into engagement with theupper edge ot the formed and to do this the intermediate sections i9 maybe replaced by others of lesser width. It found desirable, theintermediate section of the outer mold wall may be formed tapering asshown at 5G in Fig. 6.

es shown in Fig. 9 the 'inner mold wall 51 mat also be made up of cornersections 52 and intermediate sections 53 formed with beveled side edges'engaging similarly formed edges on the corner sections, and theintermediate sections in place by strips 54 secured to the cornersections.' In this construction of inner wall, said wall is collapsed todisengage it from'theconcrete wall by :lifting the intermediate sectionsout verti- .cally and if found desirable said sections may be formedtapering as shown at 55 in Fig. 7 to'assist in their release.

The entire mold structure is thus carried center mast of a height equalto than the desired height of the structure to be formed and-by means ofthe .pawls and ratchet the ywhole mold structure may begquiclrly` andeasily lifted and ad# justed upon the mast. The supportingl beams 4whichcarry and support the mold also form a scaold for the workmen and a verycheap and convenient adjustable mold for forming vertical walls issecured.I

i l l l l lt. i.

ing a mold,

vObviously changes in tlie details of constrnctionand arrangement ofparts' may be iiiade without departing trointhe spirit of my invent-ionand I do not careto limit myself to; the -j'iarticular formandarrangement shown.' j 'Y Having thus fully described myv invention whatI claim `is:- l p 1. In a device of thev character described, thecombination of a supporting mast, means adjustable rver-tically uponsaidinast for carryingalmold, alever, means for. adjustably securing andpivot-ally supporting said lever' upon said-mast, means actuated bysaid'lever for raising the mold supporting means .vertically-.upon themast, and means on the mast for holding said support-iiig .means in theposition to .which it I adjusted. Y j A- f Q'. In a device of thecharacter described, the combination ofl a supporting mast formed of aplurality of vertically extending parallel bars. cross beams extendingbetween said bars for supporting and carrying a mold, said beams beingadjustable vertically between said bars, and meansfor clamping the barsof the mast to frictionally hold the beains in the position to -whichthey are adjusted. v

y 3. In a device of the character described, the combination of a mastcomprising four vertically extending spaced parallel bars, beamsextending between said bars and crossing at 'right angles to each otherfor carrymeans Jfor raising said 'beams 100 vertically between saidbars, and means forV forcing the bars of the mast toward each other toclamp the beams between them.

4. In a device of the character described, the combination of a mast,radially extending carrying beams supported by said mast and adapted tosupport an outer Wall of a mold', radially extending beams carried bythe mast at a distance below the other beams, extension .bars carried bythe lower beams adapted to be attached to an inner v-:all of a mold, aratchet bar connecting the upper and lower beams, a leverAadjustablyyand piyotally support-ed upon the mast, and a pawl carried bysaid lever to engage the ratchet barand lift the beams.

5. In a device of the character described, the combination of a mastcomprising four spaced vertically extending bars, cross beams betweenthe bars of the mast and adapted to be connected to amold for forming acircular wall, means on the mast for raising the beams and holding thesame in their raised position, a tootanchor for said mast comprisingfour members arranged at right of said members lbeing adapted toengagelo thecirculur wall formed by the mold carried by the beais and A centerth'e mast therein.

' 62 n-a.' device of the character described, y the combination of amastcomprisi'ng four spaced .parallel bars of rectangular form in crosssection, horizontally enitendingbeams between thebars of the mastarranged at right' angles to each other, clamping means for the bars ofthemastto frictionally' clamp (he beams between,` them, a ratchet barextending longitudinally of the' ,mast and attached to the beams', iile'ver, a pivot bea'ring for the lever, means for. adj ustably vbars,lo\yeg cross beams extending at right Vsecnringthe 4pivot bearingto the mast tol be adjusted longitudinally thereon, 'and` pawlsopera-ted by the lever to' engage the ratchet bar and lift the beams.7.. In a device-df theV character described,

` the combination ofa mast comprisingl fou1\.

Aparallel spaced bars, u Aper beams extending atright angles toeac otherbetween the angles to each other between the bars,

.clamping means for the bars adjacent to the .upper and lower beams forholding. the beams by clamping them between the bars,

extension members on the lower beams,

means for guiding the extension zinembers upon the beams, brackets uponthe beams adapted to'ferin supports for an inner Wall of'ajmold, hangersadjustably attached to -thf'e oter ends of the upper beams adapted tosupport an outer wall of a mold, a rntchet bar connecting the upperbeams with vthe lower beams a ley'er Jawls carried b f the

